Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
090034goodexcellent41excellent
080044goodexcellent51excellent
070043goodexcellent61excellent
060047goodexcellent91excellent
050063lightly pollutedexcellent111excellent
040071lightly pollutedexcellent121excellent
030079lightly pollutedexcellent111excellent
020082lightly pollutedexcellent121excellent
010084lightly pollutedexcellent111excellent
000064lightly pollutedexcellent111excellent
230070lightly pollutedexcellent91excellent
220063lightly pollutedexcellent101excellent
210065lightly pollutedexcellent111excellent
200065lightly pollutedexcellent91excellent
190054goodexcellent81excellent
180052goodexcellent81excellent
170045goodexcellent81excellent
160050goodexcellent81excellent
150043goodexcellent81excellent
140051goodexcellent81excellent
130051goodexcellent81excellent
120039goodexcellent71excellent
110039goodexcellent61excellent
100042goodexcellent71excellent